Pivoted sash type window



P 25, v1962 L. Ev-PETERS 3,055,063

PIVQTED SASH TYPE WINDOW Filed June 8, 1961 3,055,063 Pl'VOTED SASH TYPE WINDDW Lowell E. Peters, 4500 Reading Road, Cincinnati, Ohio Filed June 8, 1961, Ser. No. 115,717 7 Claims. (Cl. 20-42) This invention relates to a sliding sash type window in which the sash may be tilted or pivoted between vertical and horizontal positions and may be removed from the Window frame entirely. The present invention is an improvement in the pivot mechanism, for a window of this type, disclosed and claimed in the co-pending application of Peters et al. filed May 29, 1961, Serial No. 113,216.

The pivoted or tilt out sash type window is not a new concept but rather it has its origin at least as early as the nineteenth century. There has been a recent emphasis on such windows and many attempts have been made to provide commercially satisfactory designs. The increased emphasis on this type of sash window has been caused by the need for and the desirability of reducing the time and expense of maintaining clean windows.

The type of window to which the invention is directed is one in which upper and lower sliding sash are normally confined in their vertical planes but are adapted to be released from such plane and rotated through an angle of approximately 90 to a horizontal position. In such a horizontal position the glazing on each sash normally facing the outside of the building may be conveniently washed without requiring a person to be on the outside of the building. Additionally, when both sash are in a horizontal position, almost the complete window frame area is open to permit the circulation of air during warm weather.

When the feature of complete removability of the sash is added to the structure, the structure is even more advantageous at least from the standpoint of the convenience with which broken glazing can be replaced.

It has been an objective of the invention to provide a sliding sash type window in which the sash can be pivoted and removed, the window structure being of such an economical design that its cost will not be substantially greater than a sliding sash type window not having the tilting and removability features.

In the combination of the co-pending application there is disclosed a sash type window having a double sash slidably mounted in side jamb weather stripping which is resiliently biased toward the sash stiles for good weather protection. Balance springs are connected between the side jamb weather stripping and the sash to facilitate the raising of the sash. That application is directed particularly to the mechanism by which the balance springs are connected to the sash. There is provided a T-shaped connecting pin having its enlarged end removably disposed in a mating slot in the sash to prevent rotation of the pin with respect to the sash. The smaller portion of the pin is out-of-round so that when it is rotated in a block slidably mounted in the side jamb weather stripping, it expands the block transversely against the walls of the weather stripping. The thus effected increase of the transverse dimension of the block causes the block to apply a frictional braking force against the walls of the weather stripping.

In accordance with the present invention, a pin is mounted in a block which is slidably mounted in the side jamb weather stripping, the pin having an enlarged head which is received in a slot in the sash so as to cause the rotation of the pin with respect to the block when the sash is tilted out of the plane of the window. In the present invention, as distinguished from the invention of said earlier application the pin is provided with a cam collar which has a cam surface cooperating with a cam surface on the block. The cam collar is captured in a channel in the side jamb weather stripping by longitudinal overhanging flanges.

Rotation of the pin with respect to the block causes rotation of the cam surfaces with respect to each other and effects axial displacement of the pin with respect to the block. The axial dimensions of the block and pin assembly are such that upon rotation of the pin through an angle of the cam collar will be forced against the overhanging flanges of the channel which in turn forces the block against the bottom of the channel thereby effecting a frictional braking force.

There are several advantages in the present invention. First, the fact that the cam collar is captured by the overhanging channel fianges assures the retention of the pin in the block even when the sash are removed from the window frame. Second, a much greater braking surface is applied to the channel walls. Third, because of the relationship of the larger cooperating cam surfaces, the braking force is applied more gradually and consequently more easily. Further, because a greater braking surface is employed, a smaller force is required to be applied to rotate the pins.

The several features of the present invention will become more readily apparent from the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is an elevational view of a window with which the present invention is employed;

FIG. 2 is a cross sectional view taken along lines 2-2 of FIG. 1;

FIG. 3 is a cross sectional view similar to that of FIG. 2. showing the pivot pin rotated through 90, and

FIG. 4 is a disassembled perspective view of the pin and block assembly. I

The complete window frame, including the side jamb weather stripping, with which the present invention is employed is described in detail in co-pending application Serial No. 113,216 filed May 29, 1961. The present invention is employed in the same environment which will not be described in detail here.

Referring to FIG. 1, an upper sash 10 and a lower sash 11 are slidably mounted in a window frame indicated in broken lines at 12, the side stiles 13 of each sash being in sliding engagement with side jamb weather stripping 14 which is resiliently biased inwardly by springs 15 (FIGS. 2 and 3). Balance springs 16 are connected at the lower ends of each sash and are connected at their upper ends to the side jamb weather stripping 14.

The connection of the balance springs to the lower corners of the sash is, by means of a pivot pin and sliding block assembly 17, mounted on each side of each sash at the lower corners thereof. The pivot pin and block'assembly 17 is best illustrated in FIGS. 2, 3, and 4. A block 21, of nylon for example, is slidably mounted in a channel 22 forming an integral part of the side jamb weather stripping. The block is confined within the channel by overhanging flanges 23. The block has a bore 24 which receives the shank 25 of a pin 26. The pin has an enlarged head 27 which is received in a slot 28 in the lower corner of each sash so as to be removable therefrom butfixed against rotation with respect to the sash.

Between the head 27 and the shank 25 is a cam collar 31 having a planar surface 32 which bears against the overhanging flanges 23 of the channel 22. Opposite the surface 32 is a cam surface 33 which cooperates with a cam surface of mating configuration 34 forming the bottom of a recess 35 in the block 21.

At the upper end of the block is a slot 38 into which a ring at the end of the balance spring 16 is inserted. The end of the balance spring is captured in the slot 38 by a pin 39.

The operation of the invention can best be understood by referring to FIGS. 2 and 3. When the sash are in their normal position within the plane of the window frame, the pin and block assembly is in the position illustrated in FIG. 2. On those occasions when it is desired to pivot the sash through an angle of approximately 90 to an open position, as for example during washing of the window glazing, the sash will take the position illustrated in broken lines in FIG. 3 and will rotate pin 26 at each corner of a sash through a similar angle. The rotation of the pin is effected by the engagement of the enlarged head 27 of the pin in the slot, 28 of the sash. When the pin is rotated, the cam surface 33 on the pin rotates with respect to the cam surface 34 on the block thereby forcing the pin axially away from the block. The movement of the pin in the axial direction bring the planar surface 32 on the cam collar into engagement with the overhanging flanges 23 and at the same time forces the block into frictional engagement with the bottom of the channel 22.

Thus, the effect of the rotation of the pin is to cause a frictional braking force to be applied by the pin and block assembly to the inner surfaces of the channel 22 in which the block is slidably mounted. Specifically the surface 32 of cam collar 31 imparts a frictional braking force to overhanging flanges 23 and the flat surface of sliding block 21 is in frictional engagement with the bottom of channel 22. The braking force holds the pin and block assembly in the vertical position which it assumed when the sash were pivoted against the upward pull of the balance springs. The sash can be removed from the window frame for whatever purpose is desired and are easily returnable to the frame because of the fact that the pins maintain their proper position.

Further, while the sash are removed, it is impossible for the pins to be removed from their blocks inadvertently in view of the fact that the engagement of the overhanging flanges with the cam collars 31 assures the containing of the pins in the blocks 21.

It should also be observed that because of the large cooperating surface area between the cam surfaces 33 and 34, the cam action can take place gradually through the 90 rotation and that when it is completed the axial displacement thereby effected applies a braking force throughout a large surface area between the channel 22 and the respective surfaces of the cam collar '31 and sliding block 21.

I claim:

1. A tilt out sash window comprising a frame including side jambs, at least one Sash having side stiles, side jamb weather stripping secured to said side jambs, said weather stripping being configurated to receive said sash side stiles in sliding engagement, springs between said side jamb and said weather stripping resiliently biasing said weather Stripping toward said side stiles, a longitudinal channel having overhanging flanges in said weather stripping on each side of said frame, a block slidable in each said channel and having a bore therein, a pin rotatably mounted in said bore, one end of said pin 'being mounted in a lower corner of said sash and fixed against rotation therein, said pin having a collar in engagement with said flanges, cooperating cam surfaces on said collar and block to effect axial expansion of said block and collar assembly against the walls of said channel to fix said block against sliding movement, upon rotation of saidpin through approximately 90.

' 2. A tilt out sash window comprising a frame includ- 4 ing side jambs, at least one sash having side stiles, side jamb weather stripping secured to said side jambs, said weather stripping being configurated to receive said sash side stiles in sliding engagement, a longitudinal channel in said weather stripping oneach side of said frame, a block slidable in each said channel and having a bore therein, a pin having a shank in said bore, a head at the other end thereof and a collar confined within said channel, said collar and block having cooperating cam surfaces to force said pin axially away from said block upon rotation of said pin thereby forcing said block against the bottom wall of said channel to fix said block against sliding movement.

3. 'In a tilt out window, a sash pivot comprising, a

channel member on each side of said sash, a block snugly mounted in each said channel member for sliding movement with respect thereto, and a pivot pin for connecting said sash to said block, cam means between said pivot pin and said block for forcing said block against the wall of said channel upon rotation of said pin with respect to said block.

4. In a tilt out window, a sash balance and pivot comprising a channel member having inwardly projecting overhanging flanges on each side of said sash, a block snugly mounted in each said channel member for sliding movement with respect thereto, a balance spring connected at one end to said channel member and at the other end to said block, and a pivot pin rotatably mounted in the slot in said block and connecting said sash to said block, a collar on said pin disposed within said channel and in engagement with said flanges, cooperating cam surfaces on said block and collar respectively to force said pin away from said block upon rotation of said pin, thereby forcing said block against the bottom of said channel.

5. A tilt out sash window comprising a frame including side jambs, at least one sash having side stiles and slots in the lower corners thereof, side jamb weather stripping secured to said side jambs, said weather stripping being configurated to receive said sash side stiles in sliding engagement, a longitudinal channel in said weather stripping on each side of said frame, a block slidable in each said channel, a pin rotatably mounted in said block and having an enlarged end of rectangular section mounted in said corner slot, the end of said pin mounted in a lower corner of said sash being fixed against rotation therein with respect to said sash, cam means between said pin and said block to force said block against a wall of said channel to fix said block against sliding movement upon rotation of said pin.

6. A pivot and lock for a sliding and swinging sash structure comprising a generally rectangular block having a bore therein, a pin having a shank at one end thereof pivotally mounted in said bore, a head at the other end thereof, and a collar located between said shank and head, said collar and block having cooperating cam surfaces to force said pin axially away from said block upon rotation of said pin.

7. A pivot and lock having a sliding and swinging sash structure comprising a generally rectangular block having a bore therein, a pin having a shank thereof pivotally mounted in said bore, and a collar located adjacent said shank, said collar and block having cooperating cam surfaces to force said pin axially away from said block upon rotation of said pin.

No references cited. 

